Stop mechanism for phonographs.



WNTED 'STATES yri.A .frnnir foreros.

oscanfw. Beerens, or ns'reorn, MICHIGAN.'

sror MEcHANIsM son Prrovoenerns.

nordsee.

2;' spcimen@ of Letters Patent.

Patented Feb. 6', 1912.

application sied april 5,-1911. serial No. 619,187'.

To all whom t may concern.

Be it known that I, OSGAR W. Han'rnNc, a citizen of the United States, and a resident. of Detroit, in the county of WayneA and State of Michigan, have invented a4 producing instruments after they have made a predetermined number of revolu-` tions, and its object is to provide a stop mechanism which can be set for any desired` number of revolutionswithin its range without the necessity of altering theedjustinent of any of its parts, but by merely positipning an indicator for the number "of revolutions desired.

This invention consists, in combination with 'a spring aetuatedvbrake adapted to engage the supporting table of a soundreproducing instrument, and a leverv to hold same in inoperative position, of a graduated dial, a pointer adapted to be swung over the `dial to indicate the number of revolutions, a notched disk against which the lever presses and `which holds the lever 'outward until the predetermined number of revolutions have been made by the table, a toothed wheel to turn the notched disk and pointer, and an operating device to ac of the dial bei-ng broken away for clearness.

Fig. -2 is an elevation of the same with the case broken away.

The same reference characters' refer to like part-s .in both' views.

Disk records for sound reproducing instruments vary in the number of spirals of record upon them, and it- 1s desirable to 4stop their revolutions when the sound re' production is completed, so as to prevent unnecessary wear of the stylus. The number of theengraved spirals may be indicated in any desired manner, either by placing a suitable character'on the record or upon its envelop.

In the drawing, 1' is the main shaft of any sound reproducing machine which shaft carries a record table 2 land an eccentric the driving mechanism of the instrument or connected thereto in any desired manner. Mounted on the pivot 5 carried by this plate is a lever 6, having anti-friction rollers 7 which engage the eccentric 3. The

opposite end of the lever is inclined to form a cam which engages a'roller 8 on a swinging arm 9, pivotedat l0 to the plate 4.

'.Revolubly mounted on'this plate .is a shaft 11l to which is secured a notched disk 12, a toothed wheel 13, and a pointer 14. The

pointer moves over a graduated dial 15,`

supported by posts 16, which dial furnishes a bearing for the upper end` of the shaft 11. A' shell 17 may mclose this mechanism, being provided with necessary apertures. The arm 9 is moved outward by any proper. spring 19, and carries Aa pawl 20, held 3. A plate 4 may belsecuredto-the case of against the toothed wheel by a small spring 21. A

The disk 12 has a notch 23 adapted to receive a toot-h 24 on the lever 25, which lever is pivoted on the post 26. A rodv27 connects to the free end of this lever and its opposite end is slidable in a guide 28 in the form of a covered trough secured to the I plate 4, in which is a spring 29 adaptedto press the enlarged brakeend 30 of the rod 27 against the record table 2. This enlarged end may be provided witha rubber cap 31.

The operation of the mechanism is as follows: When a record is placed on the -table and the number of revolutionsv deterto the number desired. This will turn the disk 12 and thus press the tooth 24 land the lever 25 outward, pulling the brake 30 away from. the record table 2, which may imme diately begin to revolve. At each revolution, the eccentric 3 will swing the lever 6 mined, the pointer 14 is turned (to the left):

and the arm 9, and the pawl 20 will turn the toothed wheel 13 one step. When thedesired number of revolutions have been made, the pointer will have returned to zero on the dial and the notch 23 will have returned to the position shown inFig. 1, when the spring 29 will be permitted to 'swing the tooth 24 on the lever 25 into the notch 23 and to press the brake 30 against the table to stop it.

`Many changes in the details of this confio \'cnd of the rod, and a spring to press the Having now explained this construction and the mode of its operation, what I claim as my invention and desire to secure by Letters Patent is :-'-v

1. Ina-stop mechanism for sound reproducing instruments, the combination of a notched disk, a lever mounted adjacent thereto and having a tooth adapted to enter the notch, a brake rod connected to said lever, a spring to move the rod to braking position when permitted by the disk, a graduated dial, a pointer movableover the dial to position the notched disk, and means actuated by the soundreproducing instrument to revolve said disk.

2. n a stop mechanism for sound reproducing instruments, the combination ot a l, disk provided With a notch, a lever mounted t adjacent thereto and having a tooth adapted l to ride on the periphery of the disk and to i enter the notch, a brake rod connected at one end to said lever, a guide for the other end of the rod, and a spring to press the end of the rod against the table of the` sound reproducing instrument when permitted by the notched disk, and means connected to said table for turning saidV disl- 3. In a stop mechanism for sound reproducing instruments, the combination of a disk provided with a notch, a lever mounted adjacent theretoand having a tooth adapted to ride on the periphery ot' the disk and to enter the notch, a brake rod connected at one end to said lever,'a guide for the other end of the rod against the table ot the 'sound -reproducing instrument when perniittedvby the notched disk, means connected to said table for turning said disk, a graduated dial, and a pointer connected to said disk andvmovable over the dial to indicate the number of revolutions of the table desired.

4. In a stop mechanism for sound reproducing instruments, the combination of a vertical rcvoluble shaft, an indicator at the upper end thereof, a disk having a notch in its periphery and a toothed Wheel secured to said shaft below the indicator, an arm and pawl to actuate the toothed Wheel, disk and indicator, anoperating lever engaging the arm and actuated bythe mechanism ot 'the sound reproducing instrument, a lever pivoted adjacent the disk and havin g a tooth adapted to enter said notch, a rod connected, to the i'ree end of the lever and having an enlarged end adapted to act as a brake tor the mechanism of tlie instrument, and a spring to move the brake to operating position.

In a stop mechanism, for the tables ot sound reproducing instruments, the combination ot' a spring pressed brake for said table, a lever connected theieto, a notched "disk e'aigf ging said lever -and normally holding the brake inoperative, means conmrising an indicator for positioning said disk, and means actuated by the driving mechanism ot the table for revolving said disk.

ln testimony whereof I have signed this specification in the presence Aof two subscribing Witnesses.

OSCAR W. HARTU NG. Witnesses:

lELIZABETH M. BROWN, EDWARD N. PAGELSEN.

Copies of this patent may be obtained for ve cents each, by addressing'the Commissioner of Patents,

Washington, D. C. 

